We’ve been covering HBO’s series of trademark applications for Game of Thronespretty closely, and decided to follow-up on two points.

First, as we noted in our earlier articles, initially HBO applied for trademarks using the title A Game of Thrones. Last week, however, the A Game of Thrones mark applications have been officially amended to just Game of Thrones, without the article.

Second, the question has come up on occasion regarding just how HBO exercises these marks, as they’re not a manufacturer. The answer is that these trademarks are licensed to those who do produce such content. Case in point, the smash-hit True Blood, which has led the licensing charge at HBO. At Toy Fair 2010, DC Direct exhibited character busts and a neon bar sign for the show. Of course, DC Direct and HBO are both under the Time Warner umbrella, so it’s no great surprise DC Direct would land these particular licenses.

If Game of Thrones goes forward and proves to be a success for HBO, fans can expect the same sort of licensing treatment.